The last few times I've flown, they are very specific in the pre-flight announcements, to tell passengers to SHUT OFF all electronics, saying something like, "not even flight or airplane mode, please turn them completely OFF".... which disappointed me, because I wanted to at least use the CAMERA with the phone in Airplane Mode... but nope. :(
Once at Altitude, we were allowed to use non-phone devices, or phones in Airplane Mode for other purposes... like the camera or MP3 player.
I had not heard that story about a plane CRASHING because of a rebellious, stupid dolt! :(